Accessing StoredProcedure From LINQ
Jun 2, 2008Can I know the best method to connect the sql server 2008 with Visual studio 2008, it will be helpful if I know how to access the stored procedures in the sqlserver via LINQ.
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LINQ And StoredProcedure Output Parameter
Mar 25, 2008Hi to all , I wrote a stiored procedure like below SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOALTER PROCEDURE SELET_AND_RETURN ( @opId Nvarchar(50) output)ASBEGIN SET NOCOUNT ON; SELECT @opId = NAME FROM TABLE1 PRINT @opId RETURN @opId;ENDGONow i include this procedure into my project, my problem is i dont know how to pass the output parameter from front end coding,
View 2 Replies View RelatedStoredProcedure
Feb 12, 2008Hi all,
I want to learn about sp with examples,so can any one give me the best urls regarding this.and i want to write single sp for all like (insert,delete and update)in a single sp.Please guide me.
Thank You
StoredProcedure
Aug 27, 2004Hi
I use the next StoredProcedure in Access, Inserts Users to tblUsers:
INSERT INTO tblUsers ( UserName, Password, RetypePassword, Email, Comments )
VALUES (@UserName, @Password, @RetypePassword, @Email,@Comments);
How do i have to write it in SQL?
Thank's.
StoredProcedure
Mar 12, 2008Hi
I am New to Sql Server. Now i have to write two stored procedures.
Here are my requirements. If any one help please.
1)People often ask me to do this as well... change the name of the underwriter. For Mortgage Network underwriters (different than MGIC underwriters) all you need to do is:
Update mnetwork..unw_Nola set underwriter='<underwriters username>' where LoanID='<LoanID>'
So, I need you to write a stored procedure that will do exactly that. If you don't enter a loanID or username, the stored procedure should tell you that it can't complete the task and why. Also, the list of underwriters can be found in:
select LoginName from mnetwork..unw_LoginLookup where UnderwriterName = '<Name on the email>'
So for this one, you would select where underwriterName='John Brennan'.
For most usernames, it's just first initial last name (jbrennan in this case). You can make the stored procedure to both, if you want. If you enter an underwriter name, then it will translate to the loginname. If you enter the login name, it will just use that. You don't have to do all of that if you don't want. Just make sure the procedure verifies that the username is correct (in the table) and that is enough.
Tables for this storedprocedure:
Table Name:mnetwork..unw_Nola
Table Fields:LoanID,ConditionSet,Status,Revised,RevisedBy,PDFNOLA,MonthlyIncome,DocExpDate,Notes,
Underwriter,rowguid,ApprovedDate.MovedToCentera,FK_UserID,RecordDate
TablName:mnetwork..unw_LoginLookup
Table Fields: [LoginLookupID], [LoginName], [UnderwriterName], [FirstName], [LastName], [Title], [Signature], [Address1], [Address2], [Addr1], [Addr2], [City], [State], [Zip], [Phone], [Phone2], [Fax], [Email], [DefaultSet], [rowguid], [FK_UserID], [RecordDate], [Createdby], [LastUpdated], [UpdatedBy]
2)1. Block this loan
2. Grant me access to this blocked loan.
So, I need you to write either one or two stored procedures that will accomplish the following:
When a loan needs to be blocked, it needs to be added to the mnetwork..sec_BlockedLoans table
When a person needs access to that loan, their username needs to be added to the mnetwork..sec_LoanAccess table.
Tables:
1) SELECT [LoanID], [Username], [Grantor], [GrantDate] FROM [mnetwork].[dbo].[sec_LoanAccess]
2) SELECT [LoanID], [Added] FROM [mnetwork].[dbo].[sec_BlockedLoans
any one can help to write these stored procedure.
Thanks,
JT
StoredProcedure Return Value
Jun 27, 2006I am using SQL Server 2005 now and I have a table with following columns.
ID, FirstName, LastName, Email
"ID" is the primary key (int) and is set auto generated (1 increment)
I have a StoredProcedure to insert a new record.
CREATE PROCEDURE Candidate_Create @FName nvarchar(255), @LName nvarchar(255), @Email nvarchar(255)ASINSERT INTO Candidate (FirstName, LastName, Email)VALUES (@FName, @LName, @Email)GO
I want the ID to be returned as the same time when a new record is inserted, how can I do it ? Is it possible ?
StoredProcedure In A Join
Aug 22, 2007Hi,I'm wodering if it's possible (and the correct syntax) to make a JOIN between a Table and a SP's result. This is my code, but it goes in error in the EXEC:1 SET ANSI_NULLS ON
2 GO
3 SET QUOTED_IDENTIFIER ON
4 GO
5 -- =============================================
6 -- Author:Luca de Angelis
7 -- Create date: 22/08/2007
8 -- Description:Inserimento dei dati contabili nella tabella di log
9 -- =============================================
10 CREATE PROCEDURE dbo.InsertIntoLog_dati_contabili
11 -- Add the parameters for the stored procedure here
12 @id_gestore tinyint
13 AS
14 SET NOCOUNT ON
15 BEGIN TRANSACTION
16 INSERT INTO CEL_log_dati_contabili(numero_telefonico, anno, mese, id_gestore, id_tipo_log)
17 SELECT CEL_traffico_temp.numero_telefonico
18 , CEL_traffico_temp.anno
19 , CEL_traffico_temp.mese
20 , @id_gestore as id_gestore
21 , 1
22 FROM CEL_traffico_temp
23 INNER JOIN
24 (EXEC dbo.CEL_SimConGestoreNoFilePeriodo @id_gestore, CEL_traffico_temp.anno + CEL_traffico_temp.mese) AS tabella
25 ON CEL_traffico_temp.numero_telefonico = tabella.numero_telefonico
26
27 INSERT INTO CEL_log_dati_contabili(numero_telefonico, anno, mese, id_gestore, id_tipo_log)
28 SELECT CEL_traffico_temp.numero_telefonico
29 , CEL_traffico_temp.anno
30 , CEL_traffico_temp.mese
31 , @id_gestore as id_gestore
32 , 2
33 FROM CEL_traffico_temp
34 INNER JOIN
35 (EXEC CEL_SimNelFileNoGestore @id_gestore) AS tabella
36 ON CEL_traffico_temp.numero_telefonico = tabella.numero_telefonico
37
38 INSERT INTO CEL_log_dati_contabili(numero_telefonico, anno, mese, id_gestore, id_tipo_log)
39 SELECT CEL_traffico_temp.numero_telefonico
40 , CEL_traffico_temp.anno
41 , CEL_traffico_temp.mese
42 , @id_gestore as id_gestore
43 , 3
44 FROM CEL_traffico_temp
45 INNER JOIN
46 EXEC CEL_SimNelFileNoUtente @id_gestore AS tabella
47 ON CEL_traffico_temp.numero_telefonico = tabella.numero_telefonico
48
49 IF @@error <> 0
50 BEGIN
51 ROLLBACK TRANSACTION
52 END
53 ELSE
54 BEGIN
55 COMMIT TRANSACTION
56 END
Help me please...
IF NOT EXISTS StoredProcedure
May 14, 2008Visual Studio 2008 Code VB
I'm trying to create a stored procedure that will update a database table. I want to make sure that duplicate records are not inserted into the Database Table, so I used IF NOT EXISTS . With the below code I can update the table, however, you can not add additional rows to the table.
Could someone tell me what is wrong, or how to fix it?
Thanks! losssoc ALTER PROCEDURE dbo.CaseDataInsert
@ReportType varchar(50),@CreatedBy varchar(50),
@OpenDate smalldatetime,@Territory varchar(10),
@Region varchar(10),@StoreNumber varchar(10),
@StoreAddress varchar(200),@TiplineID varchar(50),
@Status varchar(50),@CaseType varchar(200),
@Offense varchar(200)
AS
BEGIN
IF NOT EXISTS(SELECT ReportType,CreatedBy,OpenDate,Territory,Region,StoreNumber,StoreAddress,TiplineID,Status,CaseType,Offense FROM CaseData)INSERT CaseData(ReportType, CreatedBy,OpenDate,Territory,Region,StoreNumber,StoreAddress,TiplineID,
Status,CaseType,Offense)VALUES(@ReportType,@CreatedBy,@OpenDate,@Territory,@Region,@StoreNumber,@StoreAddress,@TiplineID,
@Status,@CaseType,@Offense)
END
How To Get Results From A Storedprocedure
Jun 11, 2005To all,
I looked at the MS-SQL pubs sample database and execute the example
stored procedure reptq2 and I got 17 results set back. Where can I find
an example using Visual Studio DataGrid or any means to get all these
results from this SP.
Thanks,
Frank
Use C# Through ADO Execute StoredProcedure
Apr 16, 2006Hi
public static void ExecuteStoredProcedure(string SPName, ref ArrayList Parameters) { object result=null; ADODB.Connection Connection = new ADODB.Connection(); ADODB.Command Command = new ADODB.Command(); Command.ActiveConnection = Connection; Command.CommandText = SPName; Command.CommandType = CommandTypeEnum.adCmdStoredProc;
if (Parameters != null) { for (int i = 0; i < Parameters.Count; i++) { Command.Parameters.Append(Parameters[i]); } }
try { Connection.Open(ConnectionString, "", "", 0); Command.Execute(out object RecordAffected, ref object parameters, int options ) ;//the second parameter what mean? how set it? } catch (Exception ex) { throw ex; } finally { Connection.Close(); }
}
Thanks
StoredProcedure With Parameters
May 8, 2008Hi,
I want to know how to write stored procedure with parameters. And i want to compare this parameters.
I have DropDownList and RadioButtonList in my Web Application.
How to write Procedure passing this Two control parameters.(DropDown and RadioList).
In RadioButtonList having 5 selections.
If selection 1 happens
-- some condition
if selection2 hapens
-- some condition
similarly 3,4,5
------------------
How to write conditions in storeprocedure.
Please help me i am not having exp on storedprocedure.
Thanks
Storedprocedure Not Updating The Row
Mar 23, 2008set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER PROCEDURE [dbo].[usp_CustomerDetails]
(@Number varchar(30),
@Name varchar(30),
@City varchar(20),
@SSN varchar(20),
@CustomerID int)
AS
BEGIN
IF NOT EXISTS (SELECT * FROM CustomerDetails WHERE Name = @Name AND Number = @Number)
BEGIN
UPDATE CustomerDetails SET Number = @Number,Name = @Name,City=@City,SSN = @SSN where CustomerID = @CustomerID
END
ELSE
BEGIN
print 'CANNOT UPDATE'
END
END
This my storedproc.
My problem is when i select customerID = 1 to update and if the same row having name = @name and number =@number
Then the update should take place.
but if any other row other than CustomerID=1 having name=@name and number=@number
Then the update is should not take place.
but The above stored procedure is not working like that.
so please some one help me with this.
Thankyou
Ramya.
StoredProcedure - Cashed
May 11, 2008Hello ,
When I read about Stored Procedure , I read this Topic
"
First, after SQL Server parses and compiles a stored procedure, it caches
the execution plans in its procedure cache.
I want to know what does it mean about ProcedureCache ??????
another question is :
what is the situations when SqlServer doesnot resuse the StoredProcedure in the ProcedureCache and it must recomplie it again ???
thanks
Max With LINQ
Jan 8, 2008Hello!
I try to get a list of ConditionsVersion where Version is MAX for each ConditionsVersion.
I tried something like this (as seen on http://msdn2.microsoft.com/en-us/vcsharp/aa336747.aspx#maxGrouped):
1 List<ConditionsVersion> list = (from cv in ConditionsVersions2 group cv by cv.FKConditions into cv3 select new { 4 PKConditions = cv.PKConditions,5 FKConditions = cv.FKConditions,6 MaxVersion = cv.GroupBy.Max(cv => cv.Version)7 CTimestamp = cv.Timestamp8 }).ToList();
But it doesn't work. It would be great if someone knows why.
Thank you!
LINQ - What Do You THINK?
Nov 2, 2007Well, just played a little bit with that new thing from Microsoft. Genius! Microsoft presented that step backwards as a step forward.
Say good bye to the 3-tier architecture, now any programmer, after 1 week training, will be able to put SELECT * into the source code. No more stored procedures and logic on a server. No more ugly WHERE clauses. Just SELECT * and pass all records in a loop :)
When I looked at the queries, generated by LINQ in SQL profiler, I noticed that they are generated automatically using the same pattern. It is obvious, of course, but now it would be really difficult to trace a problematic query back to the C# code. All updates to table X will look like as identical twins!
On the other side, it is not so bad. We will have soon a lot of projects, failing when they go to the production and face the real volumes of data. And a long queue of companies, crying and asking to save them. Perfect “job security�. Please, use LINQ! Port all your code to LINQ immediately (Laughing demonically like Dr. Evil)
Hm… a second thought, but what could we suggest to these companies, having performance problems with LINQ 3rd party applications, when there is no source code? Now we could at least modify some stored procedures, and with LINQ looks like the only recommendation could be “contact a developer of that application or buy more a powerful server�.
LINQ To SQL
Apr 20, 2008Is it possible to use LINQ to SQL with Report Services? If so, are there any examples, tutorials, etc.?
View 1 Replies View RelatedLinq To Sql
May 28, 2008 Is Linq a feature of sql server 2008 ?
Or is it a feature of DOt net. Visual Studio 2008 ?
Linq To Sql
May 28, 2008Some say linq to sql leads to the death of stored procedures is it correct ?
View 4 Replies View RelatedSqlDataSource, StoredProcedure, And Caching...
Mar 12, 2007Hi everyone!I tried to set my SqlDataSource's SelectCommandType to be a stored procedure. However the SqlDataSource failed to cache it. But if I just copy paste my stored procedure's content to my SqlDataSource's SelectCommand property, the cache just works. Is "StoredProcedure" as the "SelectCommandType" is not supported when caching the data? Or am I missing something here? Please help.
View 1 Replies View RelatedStoredProcedure And DataSet Return
Feb 9, 2008I am trying to write a function for some source to make a call out to and fill a RadioButtonList. I am running into a few problems though that I need assistance on. (I am new to DataSets)
Here is the function to fill the RBL:
1 Private Function GetDataSet(ByVal QuestionID As Integer, ByVal QuestionType As Integer, ByVal LocaleID As Integer, ByVal GroupingNum As Integer) As DataSet
2 Dim cnn As New SqlConnection(ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString)
3 Dim cmd As New SqlCommand
4 cmd.CommandText = "usp_responses_sel"
5 cmd.CommandType = Data.CommandType.StoredProcedure
6
7 ' Fill usp_ with Parameters
8 cmd.Parameters.AddWithValue("QuestionID", QuestionID)
9 cmd.Parameters.AddWithValue("LocaleID", LocaleID)
10 cmd.Parameters.AddWithValue("GroupingNum", GroupingNum)
11
12 Dim da As New SqlDataAdapter
13 da.SelectCommand = cmd
14 Dim ds As New DataSet
15 da.Fill(ds, "response")
16 Return ds
17 End Function
So my issue is with line 15 [da.Fill(ds, "response")]. I pulled this function from somewhere else and am trying to tailor it to my needs. However, I do not understand what I need to do with this line and it keeps bombing out. I thought this references the DB Table but in my case, the SP has several tables joined together. Is this how I reference it from the calling source code? Please assist.
Also, I am having problems understanding the binding process from the calling source. Here is my code that calls the function:1 Dim ds As DataSet = GetDataSet(CType(e.Item.DataItem("question_id").ToString, Integer), QuestionTypeID.Value, intLocale, 2)
2 rblResponses2.DataSource = ds
3 rblResponses2.DataBind()
What do I need to do with it from here and how can I work with it after it's bound?
Thanks
Update A Database With A Storedprocedure
Feb 26, 2008I'm not getting any error, but I'm not seeing any updates to my database. Here is the code below:
The click event:
protected void btnModify_Click(object sender, EventArgs e) { UpdateRecord(Convert.ToInt32(ViewState["HostNameID"])); }
The method:
private void UpdateRecord(int HostNameID) { try { // TODO // - Call stored procedure to update database table HostName // The storedprocedure is modifyHost using (SqlConnection cn = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"])) { SqlCommand cmd = new SqlCommand("modifyHost", cn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@pDesc", txtDeviceDescription.Text.Trim()); cmd.Parameters.AddWithValue("@pSerial", txtSerial.Text.Trim()); cmd.Parameters.AddWithValue("@pSmc", ddlSMC.SelectedItem.Text); cmd.Parameters.AddWithValue("@pID", ViewState["HostNameID"]); cmd.Parameters.AddWithValue("@pMilliSecs", "lastUpdated"); cn.Open(); cmd.ExecuteNonQuery(); } } catch (SqlException err) { lblmsgError.Visible = true; lblmsgError.Text += "<br><b> btn_Delete_SQL_Error </b>" + err.Message; } }
The Storedprocedure:
ALTER PROCEDURE dbo.modifyHost(@pDesc nvarchar(50),@pSerial nvarchar(50),@pSmc nvarchar(50),@pID bigint,@pMilliSecs nvarchar(50))AS UPDATE dbo.HostNameSET Description = @pDesc, DeviceSerialNum = @pSerial, SMCContact = @pSmc, lastUpdated = @pMilliSecsWHERE (HostNameID = @pID)
Is there anything I missed???
Acces Return Value From A StoredProcedure - How?
Apr 6, 2008hi
i have a stored procedure witch Returns 0 or 1 dependig if exists some rows
how can i acces that value in code behind? i tryied all, command.ExecuteScalar(), command.ExecuteNonQuery() but none works
i need something like if(command.GetReurnValue) .... else ....
thanks in advance
Getting GUID Value From StoredProcedure.ExecuteScalar()
Jun 12, 2008I need to execute stored procedure which is suppose to return GUID to my IF statement and if it is Nothing I execute other Stored procedures else some other procedures. My problem is that even though by looking at the data I know that after the execution of the procedure it should return some guid value it doesn't anybody who had the same issue??? That is the code block where I am trying to return guid from my stored procedure: getGroupID.Parameters("@GroupName").Value = dr.Item("Group ID").ToString() If getGroupID.ExecuteScalar() = Nothing Then 'Find Group by IP address if input Data Table doesn't have group getGroupIDByIP.Parameters("@IP").Value = dr.Item("IP").ToString() If getGroupIDByIP.ExecuteScalar() = Nothing Then insertGroup.Parameters("@GroupID").Value = Guid.NewGuid insertGroup.Parameters("@Group").Value = dr.Item("Group ID") insertGroup.Parameters("@ACCID").Value = getAccID.ExecuteScalar() insertGroup.ExecuteNonQuery() command.Parameters("@Group_ID").Value = getGroupID.ExecuteScalar() Else command.Parameters("@Group_ID").Value = getGroupIDByIP.ExecuteScalar() End If Else command.Parameters("@Group_ID").Value = getGroupID.ExecuteScalar() End If Thank you
View 2 Replies View RelatedSqlquery Or Storedprocedure Error
Jun 18, 2008Hello everyone,I am developing forums (Discussion Board) in C#.net 2005 with SqlServer. Right now i am having problem in fetching data from two tables.Here are the tables from which i want to fetch data.Topics Table Threads TableTopicID ThreadIDForumID TopicIDTopicName SubjectTopicDescription Replies UserID LastPostDatenow i want to fetch all the topic talbe data as well as total no of threads,Lastpostdate,UserID per topic.I am able to fetch topic table data and Total no of threads per topic through the following query.SELECT TopicID, ForumID, TopicName, TopicDescription,(SELECT COUNT(ThreadID) FROM Portal_Threads WHERE (TopicID = Portal_Topics.TopicID)) AS Threads FROM Portal_Topicsbut i am not able to fetch anoter two detail with subquery as i am getting error likeonly one expression can be specified in the select listorsubquery returned more than one value.can anyone tell me how can i fetch these two values per topic. should i use stored procedure and create temporary table and after fetching these values i can store it in temporary table and i can fetch values from that temporary table...please provide code snippet if possible as i've never used sqlserver before..Thanks in advance...Regards,Nil
View 8 Replies View RelatedError Trapping In StoredProcedure
Feb 4, 2003I have a DTS package (AdIns) that inserts to an administrative table. The Administrative table utilizes the "with ignore_dup_key" option on the index. There are other admin jobs in the DTS that are based on the return code of a parent package.
The "3604:duplicate key ignored" is an expected result of the parent package, yet it sends an failure return code to the dependent (AdIns) package, causing erroneous entries to the final audit table.
How can I reset the return code from the parent package?
TIA!:mad:
Generate A AutoInc With StoredProcedure
May 19, 2005I need to create a StoredProcedure to calculate a field auto-inc.
Who helps me?
I tried many code, but i didn't have sucess.
My sample:
CREATE PROCEDURE SP_CT_ITEM
AS
DECLARE @CONTADOR NUMERIC(008)
SET NOCOUNT ON
BEGIN TRAN
SELECT @CONTADOR = CAST(NM1_PARAMETRO AS NUMERIC(008))
FROM PARAMETRO (UPDLOCK)
WHERE SIG_PARAMETRO = 'CT' AND GRU_PARAMETRO = '001' AND COD_PARAMETRO = 'ITEM'
UPDATE PARAMETRO SET NM1_PARAMETRO = @CONTADOR + 1
WHERE SIG_PARAMETRO = 'CT' AND GRU_PARAMETRO = '001' AND COD_PARAMETRO = 'ITEM'
SELECT @CONTADOR
COMMIT TRAN
GO
Thanks.
Marco
mapolitti@stecsoft.com.br
Storedprocedure Which Contains Two Select Statements
Mar 5, 2008Hi
I have a question.
I have to write a stored procedure.I have a search page having four fields.Giving any of the field should fetch the whole record and display in the gridview. My trouble starts here I have a button field in gridview1 . when i click on the button there should be another gridview which displays refunds of particular customer i.e from another table.There is only one common colum in the two tables. based on that colum value we have to fetch from second table.
now my question is :
how to capture the colum value of first select statement and give it as input to second select staement.
my code is here :
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER PROCEDURE [dbo].[search]
(@val1 varchar(225),
@val2 varchar(50),
@val3 varchar(50),
@val4 varchar(50))
AS
BEGIN
Select*From customer where
((@val1 IS NULL) or (CNo = @val1)) AND
((@val2 IS NULL) or(LastName = @val2)) AND
((@val3 IS NULL) or(FirstName = @val3)) AND
((@val4 IS NULL) or(PhoneNumber = @val4))
Select * From refunds where CNo = @val1
END
here if i fill CNo text box in my search page its giving the value
but all the time user may not give CNo.He may search customers based firstname ,lastname etc.
so what should i do to capture CNo from first select statement and give it as input to second select statements
anyone help is appreciated.
ramya.
DFT - Howto Last Execute A Storedprocedure
Apr 13, 2007
In a DataFlowTask with several OLE DB Destinations, how can I "last", before ending this DFT execute a storedProcedure?
This storedprocedure is used for saving metadata (taskname, rowcounts etc) regarding this DFT and I dont want to add an ExecuteSQLTask after the DFT in the Control Flow
Regards
Riccardo
StoredProcedure For Generating Message
Mar 23, 2008Hi Iam new to storedProcedure.
Is There a way i can generate message usi ng Storedprocedure.
i.e somthing like this
IF EXISTS
select * from customer
IF NOT EXITS
//generate message.
is there a way i can do like this.
Please some one help me with this.
Thankyou for your time
renu.
Storedprocedure Or Inline SQL Statement?
Sep 28, 2007I am developing ASP.NET 2.0 website. I need to know some about using stored procedure. I searched through google. But could now find a favourable repLy.
Here is ..
Which way is efficient, using SQL inside the code or as SRORED PROCEDRE, which one to use with ASP.NET?
Is the Stored procedure must be created withing the server or from my application?Can anyone please give some practicle explaination about this?
My advance thanks for all...
Linq + Sql Server Everywhere = ?
Nov 8, 2006Will Linq be compatible with Sql Server Everywhere without having to add additional plugins?
View 7 Replies View RelatedLINQ To SQL Question ?
Dec 30, 2007Hullo am using Asp.Net 3.5, I want to create a usercontrol that is supported to all projects to upload file into sqlserver,
the user just give the database connection string,
tablename, column name depending upon their need, here I develop the
code using LINQ technology.
I Write a class with simple format like below,
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.Linq;
/// <summary>
/// Summary description for FILE_MASTER_INSERT
/// </summary>
//namespace Linq2Sql_demo_doc
//{
[System.Data.Linq.Mapping.Table(Name = "FILE_MASTER")]
public partial class FILE_MASTER
{
string Tablename;
public FILE_MASTER()
{
//
// TODO: Add constructor logic here
//
}
[System.Data.Linq.Mapping.Column(Name="filename")]
public string FileName
{
get;
set;
}
[System.Data.Linq.Mapping.Column(Name = "file_content")]
public byte[] file_content
{
get;
set;
}
[System.Data.Linq.Mapping.Column(Name = "file_id", IsPrimaryKey = true, IsDbGenerated = true, CanBeNull = false)]
public int file_id
{
get;
set;
}
}
public class TestDB : DataContext
{
public Table<FILE_MASTER> FILE_MASTERs;
//Initializing base class constructor
public TestDB(string s) : base(s) { }
}
This
is working but, this is suitable only for single table, I expect
depending upon the user input automaticaly the tablename, column name
will change in the yellow block codes .
Is there any way to update the tablename , columnname from any other class?
Thank you. Jeyaseelan
When IDENTITY_INSERT Is Set To OFF. -- LINQ
Jan 21, 2008I'm new to ASP/VS/Linq and I'm having a small problem.
I have one table setup in SQL Server Express 2005 through Visual Studio 2008. The table name is "Users" and has three columns (accountID, userName, email). AccountID is the primary key and set to auto incriment. I've added a couple of records by hand and it works.
I have a single form with a button, a label, and two text boxes. The button code is below. After entering some fake data that does not already exist in the database and clicking the button I get this.
Cannot insert explicit value for identity column in table 'Users' when IDENTITY_INSERT is set to OFF.
I understand that it is trying to insert something into the accountID field but I don't understand why since I'm only providing a username and e-mail address to insert.
Your help is greatly appreciated.protected void Button1_Click(object sender, EventArgs e)
{
MyDatabaseDataContext db = new MyDatabaseDataContext();
var query = from u in db.Users
where u.email == txtEmail.Text
select u;
var count = query.Count();
if (count == 0)
{
//Create a new user object.
User newUser = new User();
newUser.username = txtUsername.Text;
newUser.email = txtEmail.Text;
//Add the user to the User table.
db.Users.InsertOnSubmit(newUser);
db.SubmitChanges();
}
else
{
Label1.Text = txtEmail.Text + " already exists in the database.";
}